Buggy code:
private int attachTimeout = 0 ; public SodaEventDriver ( SodaBrowser browser , SodaEvents events , SodaReporter reporter , SodaHash gvars , SodaHash hijacks , SodaHash oldvars , SodaEvents plugins ) { } public void setAttachTimeout ( int timeout ) { } private boolean windowExists ( String hwnd ) { } private void setCurrentHWND ( String hwnd ) { } private String getCurrentHWND ( ) { } private void loadJavaEventPlugins ( ) { } private void assertPage ( SodaHash event ) { } private void saveElement ( SodaHash event , WebElement element ) { } public SodaHash getSodaVars ( ) { } public void appedSodaVars ( SodaHash vars ) { } public boolean isAlive ( ) { } public Thread getThread ( ) { } public void stop ( ) { } public boolean isStopped ( ) { } public void run ( ) { } private void resetThreadTime ( ) { } public Date getThreadTime ( ) { } private void processEvents ( SodaEvents events , WebElement parent ) { } public SodaEvents getElements ( ) { } private boolean handleSingleEvent ( SodaHash event , WebElement parent ) { } private boolean frameEvent ( SodaHash event ) { } private boolean screenshotEvent ( SodaHash event ) { } private boolean alertEvent ( SodaHash event ) { } private boolean deleteEvent ( SodaHash event ) { } private boolean javapluginEvent ( SodaHash event , WebElement parent ) { } private boolean pluginloaderEvent ( SodaHash event ) { } private boolean ulEvent ( SodaHash event ) { } private boolean areaEvent ( SodaHash event ) { } private boolean mapEvent ( SodaHash event ) { } private boolean olEvent ( SodaHash event ) { } private boolean javascriptEvent ( SodaHash event ) { } private boolean executeEvent ( SodaHash event ) { } private boolean dndEvent ( SodaHash event ) { } private WebElement imageEvent ( SodaHash event , WebElement parent ) { } private WebElement filefieldEvent ( SodaHash event , WebElement parent ) { } private WebElement liEvent ( SodaHash event , WebElement parent ) { } private WebElement trEvent ( SodaHash event , WebElement parent ) { } private WebElement tdEvent ( SodaHash event , WebElement parent ) { } private boolean hiddenEvent ( SodaHash event , WebElement parent ) { } private boolean stampEvent ( ) { } private WebElement spanEvent ( SodaHash event , WebElement parent ) { } private WebElement radioEvent ( SodaHash event , WebElement parent ) { } private WebElement selectEvent ( SodaHash event , WebElement parent ) { } private WebElement formEvent ( SodaHash event , WebElement parent ) { } private WebElement tableEvent ( SodaHash event , WebElement parent ) { } private boolean attachEvent ( SodaHash event ) { } private String replaceString ( String str ) { } private WebElement divEvent ( SodaHash event , WebElement parent ) { } private boolean scriptEvent ( SodaHash event ) { } private boolean varEvent ( SodaHash event ) { } private WebElement checkboxEvent ( SodaHash event , WebElement parent ) { } private WebElement linkEvent ( SodaHash event , WebElement parent ) { } private boolean csvEvent ( SodaHash event ) { boolean result = false ; SodaCSV csv = null ; SodaCSVData csv_data = null ; String var_name = event . get ( "var" ) . toString ( ) ; String csv_filename = "" ; String msg = "" ; this . resetThreadTime ( ) ; this . report . Log ( "CSV<seq2seq4repair_space>event<seq2seq4repair_space>starting..." ) ; csv_filename = event . get ( "file" ) . toString ( ) ; csv_filename = replaceString ( csv_filename ) ; <START_BUG> msg = String . format ( "Processing<seq2seq4repair_space>CSV<seq2seq4repair_space>file:<seq2seq4repair_space>'%s'..." . concat ( csv_filename ) ) ; <END_BUG> this . report . Log ( msg ) ; csv = new SodaCSV ( csv_filename , this . report ) ; csv_data = csv . getData ( ) ; for ( int i = 0 ; i <= ( ( csv_data . size ( ) ) - 1 ) ; i ++ ) { int keys_len = ( csv_data . get ( i ) . keySet ( ) . size ( ) ) - 1 ; for ( int key_index = 0 ; key_index <= keys_len ; key_index ++ ) { String key = csv_data . get ( i ) . keySet ( ) . toArray ( ) [ key_index ] . toString ( ) ; String sodavar_name = ( var_name + "." ) + key ; String sodavar_value = csv_data . get ( i ) . get ( key ) . toString ( ) ; if ( this . hijacks . containsKey ( sodavar_name ) ) { sodavar_value = this . hijacks . get ( sodavar_name ) . toString ( ) ; this . report . Log ( ( ( ( ( "Hijacking<seq2seq4repair_space>SodaVar:<seq2seq4repair_space>'" + sodavar_name ) + "'<seq2seq4repair_space>=><seq2seq4repair_space>'" ) + sodavar_value ) + "'." ) ) ; } this . sodaVars . put ( sodavar_name , sodavar_value ) ; } if ( event . containsKey ( "children" ) ) { this . processEvents ( ( ( SodaEvents ) ( event . get ( "children" ) ) ) , null ) ; } } this . report . Log ( "CSV<seq2seq4repair_space>event<seq2seq4repair_space>finished." ) ; this . resetThreadTime ( ) ; return result ; } private boolean waitEvent ( SodaHash event ) { } private boolean browserEvent ( SodaHash event , WebElement parent ) { } private WebElement findElement ( SodaHash event , WebElement parent , boolean required ) { } @ SuppressWarnings ( "unchecked" ) private WebElement slowFindElement ( String ele_type , String how , WebElement parent , int index ) { } private WebElement findElementByHref ( String href , WebElement parent ) { } private boolean clickToBool ( String clickstr ) { } private boolean firePlugin ( WebElement element , SodaElements type , SodaPluginEventType eventType ) { } private WebElement buttonEvent ( SodaHash event , WebElement parent ) { }

Fix:
msg = String . format ( "Processing<seq2seq4repair_space>CSV<seq2seq4repair_space>file:<seq2seq4repair_space>'%s'..." , csv_filename ) ;